| Vega,
the brightest among the 400+ stars that lie wihin 30 light-years of Old Earth,
is 250% more massive than our own sun and projects almost 50 times as much light.
Late in the 20th Century astronomers on Old Earth detected a Dust-Ring circling
Vega about 80 Astronomical Units out from the massive star. Continued study revealed
infrared radiation emanating from the Dust-Ring - indicating the particles were
not dust but much larger - large enough to indicate that a planet-building process
was under way around Vega! Although
the ring circled Vega at a distance comparable to twice the distance between Pluto
and our own sun - the amount of radiation received from Vega was still enough
to heat the particles which then radiated the heat away from themselves as infrared!
The ability to (re)radiate that heat away meant the particles were of a much larger
size than microscopic! Another
surprise was the lack of any similar particle material remaining between
Vega and the Ring itself - but this was the situation that should occur if a unseen
planet was continuing to grow from accretion of particles, asteroids, and other
orbiting materials. Could such a planet have 'scooped-up' the orbiting materials
by gravitational attraction and thereby steadily be increasing its' own mass? In
this image untold millennia have passed since those astronomers on Old Earth first
noted the early signs of a new solar system in the construction phase!
Here we note that Vega itself cannot be seen - as it is below the horizon of this
small asteroid - but the glow from the Ring can be seen clearly as we gaze upwards
towards a young planet (one of several which have been born into this new system)
around which the asteroid revolves. |